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| author | Christian König <christian.koenig@amd.com> | 2017-01-30 11:01:38 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-29 23:52:55 -0400 |
| commit | a5f6b5b1e89067d3de30ae04693f96189cc05aec (patch) | |
| tree | 684912bfdf823793d88fbcf685ab759813b01a73 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | e4f0fdcc9c95f415b6ac54d0d309021a17b9b2a8 (diff) | |
| download | lwn-a5f6b5b1e89067d3de30ae04693f96189cc05aec.tar.gz lwn-a5f6b5b1e89067d3de30ae04693f96189cc05aec.zip | |
drm/amdgpu: add support for BO_VAs without BO v2
For PRT support we need mappings which aren't backed by any memory.
v2: fix parameter checking
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index bd0d33125c18..f922e4356758 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1117,7 +1117,7 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct dma_fence *exclusive; int r; - if (clear) { + if (clear || !bo_va->bo) { mem = NULL; nodes = NULL; exclusive = NULL; @@ -1134,9 +1134,15 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, exclusive = reservation_object_get_excl(bo_va->bo->tbo.resv); } - flags = amdgpu_ttm_tt_pte_flags(adev, bo_va->bo->tbo.ttm, mem); - gtt_flags = (amdgpu_ttm_is_bound(bo_va->bo->tbo.ttm) && - adev == amdgpu_ttm_adev(bo_va->bo->tbo.bdev)) ? flags : 0; + if (bo_va->bo) { + flags = amdgpu_ttm_tt_pte_flags(adev, bo_va->bo->tbo.ttm, mem); + gtt_flags = (amdgpu_ttm_is_bound(bo_va->bo->tbo.ttm) && + adev == amdgpu_ttm_adev(bo_va->bo->tbo.bdev)) ? + flags : 0; + } else { + flags = 0x0; + gtt_flags = ~0x0; + } spin_lock(&vm->status_lock); if (!list_empty(&bo_va->vm_status)) @@ -1271,7 +1277,8 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev, INIT_LIST_HEAD(&bo_va->invalids); INIT_LIST_HEAD(&bo_va->vm_status); - list_add_tail(&bo_va->bo_list, &bo->va); + if (bo) + list_add_tail(&bo_va->bo_list, &bo->va); return bo_va; } @@ -1309,7 +1316,8 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev, /* make sure object fit at this offset */ eaddr = saddr + size - 1; - if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo))) + if (saddr >= eaddr || + (bo_va->bo && offset + size > amdgpu_bo_size(bo_va->bo))) return -EINVAL; last_pfn = eaddr / AMDGPU_GPU_PAGE_SIZE; |